GW Instek SFG-830 User Manual - Manual (Page 25)

p. 22 SFG-830
6.15 Syntax and Commands:
This section provides an overview of the commands for the SFG-830
Synthesized Function Generator.
SCPI (Standard Commands for Programmable Instruments) is a standard
created by an international consortium of the major manufacturers of test and
measurement equipment. SCPI uses IEEE488.2 syntax to provide common
commands for the identical functions of various programmable instruments.
The goal of SCPI is to reduce Automatic Test Equipment (ATE) program
development time. SCPI provides a consistent programming environment for
instrument control and data usage. This consistent programming environment is
achieved by the use of defined program messages, instrument responses, and
data formats across all SCPI instruments, regardless of manufacturer.
Syntax : SYSTem:ERRor?
The above command is used to check if the instrument is working correctly after
the GPIB command has been sent out. SFG-830 provides error messages
including command error, execution error, device-specific error, and query error.
A error message contains an integer, denoting an error number, and associated
descriptive text, e.g., (0, No error), (-100, Command error), etc. The four
categories of error messages are listed below.
) Command Error
An error number in the range [-199, -100] indicates that an IEEE488.2 syntax
error has been detected by the instrument’s parser. The occurrence of any
error in this class shall cause the command error bit (bit5) in the event status
register to be set.
Error Number Error Description
-100 Command error
-102 Syntax error
-103 Invalid separator
-104 Data type error
-108 parameters not allowed
-109 Missing parameter
-113 Undefined header
-121 Invalid character in number
-123 Exponent too large
-124 Too many digits
-160 Block data error
-161 Invalid block data
-168 Block data not allowed
-171 Invalid expression